Is Frostpeak Yeti legal in Standard, Modern, and Commander?

Frostpeak Yeti is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

What type of card is Frostpeak Yeti?

Frostpeak Yeti is a Snow Creature — Yeti. Its oracle text reads: "{1}{S}: This creature can't be blocked this turn. ({S} can be paid with one mana from a snow source.) *Some heroes line their coats with yeti fur. More yetis line their bellies with heroes.* Power/Toughness: 3/3"